var sum = document.querySelector("#sumbit");
var mtk = document.querySelector("#myModal");
var mu = document.querySelector(".modal-backdrop");
sum.onclick = function() {
	mtk.style.display = "block";
	mu.style.display = "block";
}
var sure = document.querySelector("#sure");
sure.onclick = function() {
	mtk.style.display = "none";
	mu.style.display = "none";
}